Scale.



No. 789,846. PATENTED MAY 16, 1905. R. ELDER & E. H. MOHENRY.

SCALE.

APPLICATION FILED JUN 3 SHEETS-SHEET 1.

Trulenors Roerffhler- PATENTED MAY 16, 1905.

R. ELDER & E. H. MGHENRY.

SCALE.

APPLICATION FILED JUNE 17, 1902.

3 SHEETS- SHEET 3,

wane/am 7 mwwup No. 789,846. Patented May 16, 1905.

UNITED STATES PATENT OFFICE.

ROBERT ELDER, OF ST. PAUL, MINNESOTA. AND EDIVIN H. MCHENRY, OF TACOMA, IVASHINGTON, ASSIGNORS TO FAIRBANKS, MORSE & COM- PAN Y, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

' SCALE.

SPECIFICATION forming part of Letters Patent N 0. 789,846, dated May 16, 1905.

Application filed June 17,1902. Serial No. 112,025.

T all 107L011? it y 0070067711 upper end to the frame F by means of a bolt Be it known that we, ROBERT ELDER, residf. (See Fig. 4.)

ing at St. Paul, county of Ramsey, State of H is a lever pivoted at a to a stationary part Minnesota, and EDWIN H. MGHENRY, residing of the frame and connected by a pivot b with 5 at Tacoma, in the county of Pierce and State l the steelyard E, so that the motion of the of Washington, citizens of the United States, l steelyard E is multiplied at'the outer end of have invented certain new and useful Imy the lever. To prevent undue vibration in the provements in Scales, of which the following lever H, we employ a dash-pot J, connected 55 is a specification, reference being had therein therewith in the usual manner.

to the accompanying drawings. L is a lever pivoted to the stationary part The invention relates to improvements in of the frame. In this case we have shown it scales; and itconsists particularlyinamechanpivoted upon the same pin a as the lever H. ism for registering or recording automatically t It is provided at one end with a segment M, 60 loads upon the platform and scale or which which may be counterbalanced by a weight I 5 may be automatically weighed and registered O at the opposite end. This segment meshes or recorded while the weight is passing therewith a gear-wheel P, having a dished central over, as more fully hereinafter described and portion 1), in which is a ratchet g rigid with shown, and particularly pointed out in the the shaft Q and rotatable with said shaft 5 claims. independently of the gear-wheel P. Within In the drawings, Figure 1 is an elevation this dished portion and upon the gear P we showing the end of the platform and the end mount a spring-presse :l pawl 1), so arranged of the weighing-levers with the weighing conthat in the downward movement of the segnection therefrom, the movable member or ment M the pawl will ride over the teeth of 7 weighing-beam, the recordingmechanism, and the ratchet and the shaft will not be rotated,

the actuatingdevice therefor. Fig. 2 is a plan but in the upward movement thereof the pawl view thereof. Fig. 3 is a cross-section, and will engage the teeth of the ratchet, and the Figs. 4, 5, and 6 are enlarged detail views shaft will be rotated to actuate the counting showing the recording device and the actuatmechanism R. (See Figs. 4, 5, and 6.) The 75 ing means therefor. segment M is connected with a spring-arm or A represents the frame of the scale, B the needle S by means of a loop T. This springplatform, and C, in Fig. 2, shows the ordinary arm is pivoted at the opposite end to a stafour lever scalesuch as used for wagontionary part of the frame and preferably has scales, for instance, by various manufactura roller-bearingU intermediate its ends rest- 30 erscomprisingtwolonglevers (shown in doting upon the cam V on a shaft IV, likewise 3 5 ted lines) which come together at D and are pivoted in stationary bearings, the shaft besupported upon the steelyard E, and two short ing provided at its opposite end with a starlevers, as more fully illustrated in the patent wheel X. to F. Fairbanks, No. 285,600 of September The device here shown is adapted to weigh 5 25, 1883, connecting intermediate the long lein connection with an endless carrier or chain 4 vers. The steelyard in this case is connected having buckets, the carrier having wheels at its upper end to a cross-bar or frameF and which run on rails upon the platform of the has an intermediate spring G, which in this scale, and buckets 71 carried thereby. "he case is the weighingspring, the weight being i wheels of the carrier are adapted to strike 9 indicated by the extent of movement of the the star-wheel X and turn the same and likesteelyard-rod, which is lowered by expanding wise rotate the cam.

the spring proportionately to the load upon In Fig. 1 there are shown four buckets the platform. This spring is secured at its l upon the scale-platform, and the parts are in position just after the weight has been recorded. To weigh another load, the progress of the chain will carry four succeeding buckets upon the platform, and the wheel of each one will strike the star-wheel and rotate it a quarter of a turn. The third wheel of the four last referred to will turn the cam so that the roller-bearing U is opposite the reduced portion Z on the cam, which will cause the needle or spring-arm S to descend by gravity, carrying with it the segment M, which will lower until it strikes the weighing beam or lever H. This operation, however, will not take place, preferably, until the fourth bucket is on the scale-platform, but before the fourth bucket shall have reached the star-wheel. The load on the scale-platform, therefore, will be equal to the four buckets plus the length of chain thereon, which of course should be upon the scale when it is balanced at zero. The further movement of the fourth bucket from its initial impact upon the platform to a position beyond the star-wheel will not change the load on the platform, but will operate the star-wheel the succeeding quarter of a turn and turn the cam in the position shown in Fig. 1. The extent of lowering movement of the segment will be determined by the position of the lever H, which in turn will be determined by the load on the scale. In other words, the lever H will act as an adjustable stop for the movement of the segment, and its adjustment will be determined by the weight on the scale.

The rotation of the cam by the fourth bucket in the manner described to operate the spring-arm S will cause the segment to raise from its position on the lever H to its highest position and register on the registering or recording mechanism the weight of the load.

It is evident that each succeeding group of four buckets will correspondingly be registered or recorded, so that the total weight passing over the scale may be maintained.

Instead of balancing the scale with the carrier subtracted it is evident that the carrier may be weighed in with the load, and in figuring the total the weight of the carrier may be deducted. It is also obvious that this device may be used for other purposes than herein shownfor instance, cars traveling over railway-track scale or for other purposes-by simply arranging the actuating means for the particular use to which it is applied.

The invention clearly comprehends a scale wherein the star-wheel X is turned by hand.

l/Vhat we claim as our invention is- 1. The combination with a Weighing-scale having a movable member indicating the load by the extent of its movement, of a recording l l l 1 device, an actuating-gear therefor having a clutch connection therewith, an actuatinglever having a rack engaging the gear, the movable member serving as a stop to determine the movement of the actuating-lever, and means for operating the actuating-lever while the load is on the scale, including an arm pivoted at one end to a stationary portion of the scale and connected at its opposite end to the actuating-lever, and a cam-wheel operatively associated with said arm.

2. The combination of a weighing-scale having a movable member indicating the load by the extent of its movement, of a recording de vice, an actuating-gear therefor having a clutch connection therewith, a pivoted actuating-lever having a segmental rack engaging the gear, the movable member serving as a stop to determine the movement of the actuating-lever, and means for operating the actuating-lever including an arm pivoted at one end to a stationary portion of the scale and connected at its opposite end to the actuatinglever, and a cam-wheel operatively associated with said arm.

3. The combination with a movable loadcarrier, of a movable part of a weighingscale, and a weightrecording mechanism adapted to be controlled by the load-carrier including an actuating member, the movable member serving as a stop to determine the movement of said actuating member, an arm pivotally secured to a stationary portion of the scale, a connection between said arm and said actuating member, a cam-wheel operatively associated with said arm, and an arm secured to the cam-wheel shaft and projecting in the path of the movable load-carrier.

l. The combination of a weighing-scale having a movable member H indicating the load by the extent of its movement, a recording device, an actuating-gear P therefor having a clutch connection therewith, a pivoted actuating-levcr L having a segment M engaging the gear P and overlying the movable member H, whereby said movable member will serve as a stop to limit the downward movement of said actuating member L, and means for operating the actuating-lever while the load is on the scale.

In testimony whereof we a'liix our signatures in the presence of two witnesses.

ROBT. ELDER. E DlVlN H. Mel IENRY.

Witnesses to the signature of Robert Elder:

ITIARRY E. Vnneosuu, F. L. DAGGETT.

\Vitnesses to the signature of Edwin ll. McH en ry HARRY E. Vnneosmv, I. S. HnNDnIo/ks. 

